Apparatus for handling molten glass.



J. A. GHAD/IBERS.l

APPARATUS FOR HANDLING MOLTBN GLASS.

APPLICATION FILED MAB. 25, 1907.-

950,092. 1 Patented Feb. 22, 1910.

3 SHEETS-SHEET 1.

FIG. 1

J. A. CHAMBERS.

APPARATUS POR HANDLING MOLTEN GLASS.

APPLICATION FILED HAB. 25, 1907.

Patented Feb.22,1910.

3 SHEETS-SHEET 2.

INVENTOR.

bfuuww A, JWAM J. A. CHAMBERS.

APPARATUS PoR HANDLING MOLTEN GLASS.

APPJIUATION FILED MAR-Z5, 1907.

Patented Feb, 22,

3 SHEETS-SHEET 3.

INVENT JWZHML/ i .47@

- WlTNESSES.

JAMES A. CHAMBERS, OF PITTSBURG, PENNSYLVANIA APPARATUS FOR HANDLING MOLTEN GLASS.

To all. whom it may concern:

Be it known that I, JAMES A. CHAMBERS, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, av citizen of the United States, have invented or dis` covered a certain new and useful Improvement in Apparatus for Handling Molten Glass, of which improvement the following is a specification.

The invention relates to the handling ot molten glass when delivered frbm a melting furnace or tank into a suitable receptacle,

preparatory to its subjectionat proper temperat-ure and' consistency to any desired shaping operation, and 1t consists 1n means for. the attainment of such temperature and consistency, and for the maintenance of the same while the glass is being subjected to such shaping operation, as well as the treatment of the glass which may remain in the receptacle, or in that portion of it from which the shaped glass has been withdrawn,

- after the termination of the shaping operation.

-`The invention has been found to be particularly well adapted for use in connection with the drawin of glass, either in sheet or hollow form, rom a molten body, and in the accompanyin drawing I have illusapparatus embodying my invention, as I prefer to employ it for this purpose, wherein- Figure lis'a longitudinal vertical sectionalview of such apparatus arranged in juxtaposition to a glass melting furnace of common form; Fig. 2 is ahorizontal sectional view of the same; Fig. 3 is an elevation artly in section, at the drawing point; and ig`. 4 is a perspective view of the receptacle or pan from which the glass is 'In the drawing of lass difficulty has been experienced 'arising Irom or by reason of inequalities or `variations in temperature ofthe glass indifferent pots or receptacles,

as well as in di'erent parts of the same receptacle.' Inthe use of the apparatus illustrated these diixiculties are obviated, by causlng the receptacle into -which the glass flows from the melting furnace, or is otherwisecharged, to rotate in a heating chamber so yas to bring different. portions of the receptacle to the charging point; lthen to bring successive portions of the same to an uninclosed drawingpoint, and protect the same A while at the drawing point from the heat of Specification of Lette-rs Patent. Application fued March 25, 1907.'

Serial No. 364,235.

the chamber; and linally to bring thatportion of the receptacle from which the glass has been drawn back into the heating chamber. The eii'ect or result is that a pool of glass preserved in the receptacle, while that portion of the glass at the drawingr point is permitted to chill equally and evenly in all parts as it is drawn, and excessive chilling of any portion of the pool of glass in the receptacle is prevented.

Referring to the drawings, 2 represents Patented Feb. 2.2, 191.0.

the melting tank of the furnace, which may be of the ordinary construction, having heating fines 8, or other suitable heating devices, and a bridge wall 4 which divides the melting chamber 2 from the lining lchamber, the communicating passage 6 between the chambers 2 and 5 being below the normal level of the molten glass, thus preventing any unmelted iioating matter from passing to the fining chamber. Leading from the ning chamber 5 is a spout or trough 7, which extendsinto the heating chamber 8 to a point directly over the revoluble pan 9. This pan 9 is formed of clay, or other snitvable Substance, and may be provided with supporting or strengthening braces or wings 10 and 11. It is also revolubly supported on a cent-ral spindle 12, which is protected by a fire-brick wall 13, and is rotated by means of bevel gear wheels Hand power shaft 15, or by other suitable means. Below the pan 9 is the fire-chamber 16 into which gas-burners 17, or other heating', devices, open, which burners are designed to heat the bottom of the pan. i

Above the pan 9 is the heating chamber 8, which may be heated by any suitable mea-ns. As shown in the drawings, the larger portion of the heating chamber 8 is partitioned off by the wall 18, leaving a relatively small drawing space or room 19, which is open at the top to permit the bait or'baits 20 being inserted in the glass in the pan and the drawing of cylinders or sheets of glass therefrom. To protect that portion of the glass in the drawing room that is adjacent to the heating chamber 8 from being kept `trom chilling, and to permit all the glass in thejdrawing room to chill evenly, I interpose a mantle or shield 2l between the heating chamber 8 and the drawing room 19, one form-of which is shown in Figs. 2 and 3 of. the drawings. This mantle 21, as shown in Figs. 2 and 3, consists of a ire-clayshield,

4supported by the rods 22, connected with affecting the surface of the glass in thatpart of the pan 9 which is situate in the drawingroom 19.

The operation pf my apparatus as above described, is as follows: The glass is melted and fined in the furnace 2 and flows, or is caused to How, through the chamber 5 and the trough 7 into the pan 9 in the heating chamber 8, where it spreads out andiiills every vacant part in this pan. After the pan 9 has received the desired quantity of molten glass, that is, after the glass has risen to a certain height in the plan, the pan is given a quarter rotation, which brings a fresh portion of glass into the drawing room 19, and one or morecylinders may be drawn from the molten glass in that portion of the pan 9 that is in the drawing room 19 before the pan is rotated, depending entirely upon the amount of chill which has been imparted to the glass in the .drawing room 191during thc filling of the pan. That portion of the glass in the drawing room 19 being in contact with the air, soon chills sufiiciently on its surface to permit the drawing of the cyl inders, which'are drawn by means of the baits 2O inthe usual manner. After the chamber f8 1s ke' drawing operation, the pan i's given a quarter rotation, which `brings that part of the pan from which the glass has been drawn back into the heating chamber 8, and also brings a fresh portion of the pan into thr drawingroom. Bygthis means the glass in that portion of the pan 9 in the heating glass which is in the drawing-room 19 is permitted to chill slightly but evenly on the surface'.i

The advantages of my invention are that thereis no material hardening of the glass in any. part of the pan that would requlre remelting, and theglass in the drawing room is permitted to chill evenly on the i surface, suiiiciently to` af-fe'wthe drawing to be successfully accomplished, forming a cylinder 0r sheet of equal thickness of glass throughout its area, and free from internal strains.

Although I have shown andidescribe'd avcertain form of movable shutter, I do not desire vto limit myself thereto, as any suit- -able form of mechanical device may be employed that will permit the heat from the ina molten condition at.n an even temperature, and that portion of the inclosing the remaining portion of said re-.

ceptacle and having' an open top to permit the drawing of glass sheets and being separated from the heating chamber by a' wall ovcrhanging the receptacle, meansfor moving the receptacle so that successive portions thereof may be moved from thev heating chamber to the drawing room, and movable means shaped 4to conform to said wall and arranged to extend below said wall to protect the-glass in the drawing room from the heat of said heating chamber.

2. In apparatus for handling molten glass, the combination with arotatory drawing pan, of a heating chamber inclosing a portion of saidreceptacle, a drawing room lnclosing the remaining portion of said receptacle and having an open top to permit the drawing of glass sheets and being separated from the heating chamber. -by a wall overhanging the=,re'ceptacle, means for moving the receptacle'tlso4 that successive portions thereof maybemmoved from the heating chamber to the drawing room, and a shield shaped toA conform to said wall and arinto the`pan for-separating the portion of the. an within the drawing room from the lheating chamber dur 'ng the drawing operatIOIl. i 3. In apparatus for handling molten glass, a heating 'chamber'- having a rentrant overhanging wall upon one side thereof forming an'open' topped drawing room, a receptacle arrange to rotate within the heating chamber an' v undersaid 'overhanging wall, and a vertially movable shield or shutter shaped to conform to the. overhanging wall and coperating 'therewith 1n lowered position to completely separate the drawing room from theheat of the heating chamber.

In testimony whereof, I have hereunto set my hand. 1

. A. BARTH,

C. E. Eccnns.

ranged to be lowered below the wall and 

